Means for cleaning the electrodes in electrical fume-precipitators



UNITED STATES PATENT OFFICE.

ALFRED PETERSEN, OF FRANKFORT-ON -T NATIONAL PRECIPITATION COMPANY RATION OF CALIFORNIA.

11E-MAIN, GERMANY, AssIGNon To INTER- oF Los ANGELES, CALIFORNIA, A Conro- Specification of Letters Patent.

.A l Patented Dec. 6, 1921.

Application filed July 10, 1916. Serial No. 108,297. l (GRANTED UNDER THE PROVISIONS 0F THE ACT 0F MARCH 3, l1921, 41 STAT. L., 1313.)

To all whom t may concern.'

Be it known that I, Dr. ALFRED PETERSEN, diplomad engineer, a citizen of the Empire of Germany, residing at Eppsteinerstrasse 6, Frankfort-on-the-Main, Germany, have invented certain new and useful Improvements in Means for Cleaning the Electrodes vin Electrical Fume-Precipitators, of'whi'ch the following is a specification.

The invention relates tc a device for removing from the discharge and collector electrodes of electrical fume precipitating plants the dust deposited on the electrodes, such removal of the dust being effected by blowing it oli' by means of of air or other gas.

The accompanying drawing illustrates such a device.

Fig. l showing a plan-view thereof, and

Fig. 2 a vertical section on line A-B.

a are the dust-collecting*electrodes consisting for instance of a wire-netting, b are the discharge-electrodes for high tension currents, consisting for instance of fine wire. Between each two field-groups there is a blast-pipe c, to which compressedl air or gas is fed by means of a tube d discharging into a chamber e. In this chamber e the blast pipe c is mounted so as to be slidable longitudinally and to be rotatable around its longitudinal axis, and the compressed air fed to it is admitted to the interior of blastpipe c through the openings f. In front of the different fields the blast-pipe c is provided with reciprocally arranged nozzles, g. By displacing the blast-pipe 0 in axial direction it is possible to clean with one nozzle g both the discharge electrodes as well as the collector electrodes and so to free lthem from the adhering dust. By rotating the blast-pipe c on its axis through an angle of 180 by means of the hand-wheel -L the nozzles g are directed upon the opposite field thereby enabling the operatorto clean with a single nozzle the discharge and collector electrodes of the opposite field. By

a current or blast i rotating the pipe at an angle of less than 180o the whole electrode surface of each single Held can be swept throughout its height.

What I claim is:

.1. In combination with collecting electrodes of an electrical precipitator, a blast pipe provided with means for supplying gas thereto and mounted to rotate so as to direct gas on to different parts of said electrodes.

2. In combination with discharge and collecting electrodes of an electrical precipi-l tator, gas supply means and air blast means in` communication with said gas supply means and mounted to move rotatively and longitudinally to direct a gas blast at different parts of said electrodes.

3. -In combination with electrode means in an electrical precipitator, gas blast means movably mounted to direct a gas blastrto kdifferent parts of said electrode means to vclean the same.

4. In combination with a Hue in an electric precipitator a blast pipe, means for controlling the direction of the blast in the flue and means for supplying a blast medium.

5. In combination with a ue in an electric precipitator a blast pipe, means for moving the pipe in axial direction, means for rotating the pipe and means for supplying a blast medium.

6. In combination with an electric precipitator means for cleaning the same, comprising a blast pipe mounted for longitudinal and rotary movement, a chamber for admitting a blast medium and a connection between the said chamber and the blast pipe for admitting the medium ing its motion.

In testimony whereof I have affixed my signature in presence of two witnesses.

ALFRED PETERS-EN.

Witnesses:

HARRY E. CARLSON, x CARL GRUND.

to the latter dur- 

